SpringMVC中使用AOP环绕方式记录日志

第一步，加入相关jar包（当然还用到log4j相关jar包，这里未列出）

        <dependency>
            <groupId>aopalliance</groupId>
            <artifactId>aopalliance</artifactId>
            <version>1.0</version>
        </dependency>
        <dependency>
            <groupId>aspectj</groupId>
            <artifactId>aspectjrt</artifactId>
            <version>1.5.3</version>
        </dependency>
        <dependency>
            <groupId>aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.5.3</version>
        </dependency>
        <dependency>
            <groupId>cglib</groupId>
            <artifactId>cglib</artifactId>
            <version>3.2.0</version>
        </dependency>

第二步，要让Spring MVC支持AOP，在其配置文件中加入CGLib动态代理

    <aop:aspectj-autoproxy proxy-target-class="true"></aop:aspectj-autoproxy>

第三步，修改SpringMVC配置文件的beans声明，加入

xmlns:aop="http://www.springframework.org/schema/aop 和 

http://www.springframework.org/schema/aop 

http://www.springframework.org/schema/aop/spring-aop-3.0.xsd

加入后：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
        xmlns:p="http://www.springframework.org/schema/p"
        xmlns:context="http://www.springframework.org/schema/context"
        xmlns:mvc="http://www.springframework.org/schema/mvc"
        xmlns:aop="http://www.springframework.org/schema/aop"
        xsi:schemaLocation="http://www.springframework.org/schema/beans  
                        http://www.springframework.org/schema/beans/spring-beans-4.0.xsd  
                        http://www.springframework.org/schema/context  
                        http://www.springframework.org/schema/context/spring-context-4.0.xsd  
                        http://www.springframework.org/schema/mvc  
                        http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
                         http://www.springframework.org/schema/aop 
                        http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">

第四步，编写切面bean

import javax.annotation.Resource;

import org.apache.log4j.Logger;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.springframework.stereotype.Component;

/**
 * 日志服务
 * @author zain
 *
 */
@Aspect
@Component
public class LogServer {
	
    private static Logger logger = Logger.getLogger(LogServer.class);
	
	@Resource
	private ApiLogsService apiLogsService;

	/**
	 * 拦截指定的方法，环绕的形式。
	 * @param context
	 * @return
	 * @throws Throwable
	 */
	@Around(value = "execution(public * com.xxx.xxxx.controller..*.*(..))")
	public Object invoke(ProceedingJoinPoint context) throws Throwable {
		Object result = null;
		try {
			apiLogsService.logRequest();  //记录请求内容
			result = context.proceed();  //执行目标方法
			Response response = LogUtils.parseCustomResponse(result);
			apiLogsService.logResponse(response);   //记录返回内容
		} catch (Exception e) {
			logger.error(e);
			apiLogsService.logException(e);
			throw e;
		} finally {
			apiLogsService.logFinish();
		}
		return result;
	}
}